アプリケーションギャラリ

In this tutorial model, the acoustics of the human ear canal are investigated. The output includes the input impedance and the transfer impedance, as well as the level transformation from the entrance to the ear drum.

The geometry of the ear canal used is based on measurements from test subjects reported in literature. The ear drum is modeled using the built-in physiological impedance model for the Human Ear Drum, and the impedance of the ear canal boundaries is modeled using the Human Skin. To include the thermoviscous boundary layer losses, the Thermoviscous Boundary Layer Impedance feature is used.

With the increase in tools that can scan the ear canal, the simulation approach presented here also allows for “custom simulations” for individuals. Earbuds or hearing aids can, for example, be virtually customized and fitted.